Regression: Android Apps / Loudspeaker routing not possible anymore

REPRODUCIBILITY: Always
OS VERSION: 4.6.0.13
HARDWARE: Xperia 10 II
UI LANGUAGE: DE
REGRESSION: YES

DESCRIPTION:

Before SFOS 4.6.0.13 it was possible to route the audio to the loudspeakers.

When using following Android apps; Wire, Threema - it is not possible anymore to switch the audio to the loudspeaker. No difference when using a headset, the usage of the “loudspeakers button” does not show any effect.

PRECONDITIONS:

SFOS 4.6.0.13 , Android runtime, Wire, Threema apps.

STEPS TO REPRODUCE:

Active Threema call … → “loudspeakers button”

EXPECTED RESULT:

Hands free usage of the phone with loudspeaker as main audio output device.

ACTUAL RESULT:

Audio output device is internal speaker or headset speaker but not “loudspeaker”

MODIFICATIONS:

None

ADDITIONAL INFORMATION:

This scenario was possible before updating from 4.5.0.25 to 4.6.0.13.

Maybe related: I’ve noticed on 4.6 car Bluetooth phone calls cannot be routed to loudspeaker either.

Tapped speaker icon, but no audio was passed through.